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Open AccessArticle

Preliminary In-Situ Evaluation of an Innovative, Semi-Flexible Pavement Wearing Course Mixture Using Fast Falling Weight Deflectometer

1
Civil and Industrial Engineering Department, University of Pisa, 56122 Pisa, Italy
2
Faculty of Engineering and Architecture, University of Enna Kore, 94100 Enna, Italy
*
Author to whom correspondence should be addressed.
Materials 2018, 11(4), 611; https://doi.org/10.3390/ma11040611
Received: 2 February 2018 / Revised: 23 March 2018 / Accepted: 12 April 2018 / Published: 16 April 2018
(This article belongs to the Special Issue Advanced Materials for Transport Applications)
In the last forty, years semi-flexible pavements have been successfully employed, especially in those areas subjected to heavy and slow-moving loads. They usually comprise a wearing course of Grouted Macadam, a composite pavement material that provides significant advantages in comparison to both concrete and asphalt pavements. On the other hand, the laying process of this material is a two-stage operation, and the realization complexity leads to long realization times and high initial costs. Therefore, the use of semi-flexible pavements has been limited to some fields of application and areas. Recently, an innovative material has been developed to be used as an alternative to Grouted Macadam for semi-flexible pavement wearing course realization. This material should provide similar or even superior characteristics compared to traditional Grouted Macadam. This will reduce semi-flexible pavement construction time and avoid the need for dividing the laying process. This paper presents an experimental program involving the use of FastFWD, as an APT device, to evaluate in-situ properties and performance of this material. The achieved results regarding the validation of this new material by means of FastFWD appear promising both in terms of the material’s properties and resistance to dynamic load repetitions. View Full-Text
Keywords: Accelerated Pavement Testing (APT); Fast Falling Weight Deflectometer (FFWD); semi-flexible pavement; Grouted Macadam; field-testing Accelerated Pavement Testing (APT); Fast Falling Weight Deflectometer (FFWD); semi-flexible pavement; Grouted Macadam; field-testing
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Pratelli, C.; Betti, G.; Giuffrè, T.; Marradi, A. Preliminary In-Situ Evaluation of an Innovative, Semi-Flexible Pavement Wearing Course Mixture Using Fast Falling Weight Deflectometer. Materials 2018, 11, 611.

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